Brown, A., Jordan, C., Millar, T. J., Gondhalekar, P. & Wilson, R. Nature290, 34 (1981). ArticleADSCAS Google Scholar
Gahm, G. F., Kredga, K., Liseau, R. & Dravins, D. Astr. Astrophys.73, L4 (1979). ADSCAS Google Scholar
Gondhalekar, P., Penston, M. V. & Wilson, R. The First Year of IUE (ed. Willis, A. J.) 109 (University College, London, 1979). Google Scholar
Imhoff, C. L. & Giampapa, M. S. Astrophys. J. Lett.239, L115 (1980); in The Universe at Ultraviolet Wavelengths: The First Two Years of IUE (ed. Chapman, R. D.) 185 (NASA Conf. Publ. 2171, 1981); in Proc. 2nd Cambridge Workshop on Cool Stars, Stellar Systems and the Sun (ed. Giampapa, M. S.) SAO Spec. Rep., in the press). Google Scholar
Boesgaard, A. M. & Simon, T. in Proc. 2nd Cambridge Workshop on Cool Stars, Stellar Systems and the Sun (ed. Giampapa, M. S.) (SAO Spec. Rep., in the press).
Levine, J. S., Augustsson, T. R., Boughner, R. E., Natarajan, M. & Sacks, L. J. in Comets and the Origin of Life (ed. Ponnamperuma, C.) 161 (Reidel, Dordrecht, 1981). Google Scholar
Levine, J. S., Augustsson, T. R. & Natarajan, M. Origins of Life12 (in the press).